Air-circulating apparatus for cars



. C. A. MOORE.

. MR CIRCULATING APPARATUSNFOR CARS.

APPLICATION FILED APR. 4, 1914. RENEWED NOV. 7. 1919.

1,344,057. Patented J1me 22,1920.

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C. A. MOORE.

AIR CIRCULATING APPARATUS FOR CARS.

APPLICATION FILED APR.4, 1914. RENEWED NOV. 1. 1919.

.1 4 Patented June' 22, 1920.

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AIR CIRCULATING APPARATUS FOR CARS.

APPLICATION FILED APR. 4, I914. RENEWED NOV. 1. 1919.

1,344,057. Patented June 22,1920.

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UNITED STATES PATENT OFFICE} CHARLES n. MOORE, on ST. PAUL, MINNESOTA.

AIRC1RCULATING APPARATUS FOR CARS.

Specification of Letters Patent. t t J n 22, 1920,

Application filed April 4, 1914, Serial No. 829,509. Renewed November 7, 1919. Serial No. 836,473.

' ofMinnesota, have invented a new and useful Improvement in Air-Circulating Apparatus for Cars, of which the following is a specification.

This invention relates to an improved air circulating apparatus for cars, or other body structures forming provision chambers, and has for its primary object the production of improved apparatus for more efliciently circulating the air in a car or other structure whereby perishable lading is more perfectly preserved. My improved apparatus is adapted to more efficiently circulate'the air in a car or other structure than heretofore when it is being booled or heated, or when the cooling or heating apparatus is not employed.

In the accompanying drawings forming part of this specification, Figure 1 is a plan partly broken away and in section of my invention, the sectional ortion being taken on the line X-X of Fig. 2; Fig. 2 is a section taken on the line Y--Y of Fig. 1; Fig. 3 is a similar view to Fig. 2 for the purpose of illustrating the circulation of.

air when the heater is in operation and Figs. l and 5 are longitudinal vertical sections taken on the line Z-\Z of Fig. 3.

In the drawings A indicates a car body or other suitable structure having insulated end walls 2 and 3, insulated side walls 4 and5, insulated floor 6, and insulated ceiling 7. Spaced from the inner surfaces of the side and end walls, ceiling and floor is an inner casing 8 forming air passages 9 for the circar to produce passages 13 between'the ice bunker and the lading chamber. Immediately above'the ends of the ice bunker the air passages 9 in the roof of the car open into the ice bunker to form a communication A. MOORE,

between the ice bunker and the lower port1on of the lading chamber through the walls of the car. The ends of the ice bunker have double walls spaced apart and the floor of sand bunker is formed with a drip pan 14, which is connected to drain pipes 15 leadlng down through the side walls 4- and 5 of the car, which open into traps 16 below the floor of thecar. The space between the end walls and between the drip pan and floor of the ice bunker form a communication for air to circulate from the top of the car down through the end walls and floor of the bunker and drip pans into the bottom portion of the lading chamber, openings 17 being provided near the floor of the car into the drain pipes and into the passage 2 1n the floor of the car. The floor of the ice bunker is convenientlyfsloped endwise and crosswise for draining water from the bunker, it being understood that drain pipes such as 15 are disposed in both side walls *4: and 5 of the car. Suitable hatchways 18 are provided in the roof remote from the ends of the car and leading into the ice.

bunker for filling it with ice.

Disposed in the car below one side of the ice bunker and immediately adjacent the side wall 5 is a heater, which as illustrated consists of a stove D standing on the floor of the car. This stove which may be of any suitable construction is accessible through a doorway 19 in the wall 5-from outside of the car, although it is not necessary to em-- ploy the doorway 19, because it is obvious the door of the stove can be made accessible from inside of the car when desired. The stove is shown provided with the usual chime ney or stove pipe 20 for smoke and gases passing to the outside atmosphere through the roof of thecar. The stove and stove pipe are enveloped by a jacket 21 spaced from the walls of the stove and the stove pipe, and terminating at its upper end a short distance-below the roof of the car, but connected near the floor with a passage 22 communicating with the outer atmosphere. The doorway and ash door having the usual draft damper project through the casing or jacket 21 and are accessible through the forming an air circulating chamber, the I upper end of the jacket being spaced from the roof and floor of the car to form air communications with the lading chamber. The upper end of the guard casing 23 projects above the floor of the ice bunker to prevent water flowing down from the bunkerinto the lading chamber and the space at the upper end of said guard is surrounded downward by a screen 24: to prevent ice coming into contact with the jacket. The spaces at the ends of the ice bunker are also covered by screens 25 to prevent ice from spilling over into the lading chamber. Placed within the guard and connected with the upper portion of the smoke pipe is a branch pipe 26 through which vitiated air is adapted to be conducted from near the floor of the car through the space between the lower end of the guard and the fioor and from the passage 9 in the floor.

A vertical air fine 27 is also constructed in the guard casing 23 which forms a communication for the circulation of air between the upper'andlower ends of the lading chamber indicated by the arrows in Figs. 2 and 5, to-wit Fresh air is drawn down through the smoke pipe '20 and branch 26 into the lower portion of the car. This. fresh air from the outside circulates throughout the lading chamber and through the passage 9 up over the ends of the bunker into contact with the ice. Part of the chilled air passes to the outside atmosphere through jacket 21 and floor opening 22, and part of said air returns through the flue 27, the passages inthe walls and floor of the bunker and the drain pipes 15, into the lower portion of the lading chamber. This circulation of air continues while there is any ice in the bunker, part of the air being deflected into the-upper end of the jacket 21 and passage 22 of the floor of the car and conducted to the outside atmosphere. "In this manner there is produced throughout the lading chamber in the car a circulation of pure cold air beneficial to preserving the lading of perishable goods.

When the car is used in winter time and it is desired to heat the lading chamber to prevent freezing of the lading, the stove D is operated in the usual manner. When it is a coal stove, coal is placed therein and oxygen supplied through the doorway 18.

It is obvious however that the stove may be replaced by an oil or "gas heater when desired, and that it can be-operated from in side insteadof outside of thecar. Fresh air is admitted through the passage 22 in the floor of the car as illustrated in F igs; 3 and 4 and warmed by the stove and passes upwa'rdly into the top of'the lading chamber through the jacket 21. This pure warm air circulates through the passage 9 in the upper walls of the-car andover the ends of the ice chamber; r

through the drains 15 and air flue 27, while cold vitiated air is carried oif through the passage 9 in the floor, branch 26 and smoke pipe 20 with the smoke and gases to the outside atmosphere. As a result pure warm air is circulated freely throughout the entire leading chamber, vitiated air passing downward through the slatted floor of the car and to the outside atmosphere. When the ice bunker and heater are not operated the smoke pipe and passage 21 provide ingress and egress openings causing a circulation of air similar to that produced when the car is either heated or cooled as described only to a less degree, but sufficient to provide a circulation of pure air through the lading chamber to preserve various kinds of perishable goods.

In accordance with the patent statutes I have described the principles of operation of my invention together with the apparatus which I now consider to represent the best embodiment thereof, but I desire to have it understood that the construction shown is only illustrative and that the invention can be carried out by other means and applied to uses other than those above set forth within the scope of the following claims.

Having described my invention, what I claim as new and desire to protect by Letters Patent is 1. A body structure forming a provision chamber, a draft duct forming a communication between the outside atmosphere near the upper portion of said body structure and the lower portion of said chamber, and a second draft duct forming a communication between the outside atmosphere near ducts are influenced respectively either by a heating or cooling medium.

2. A body structure forming a provision chamber, a draft duct forming a communication between theoutside atmosphere near the upper portion of said bod structure and the lower portion of said 0 amber, and a second duct forming a communication between the upperportion of said chamber and the outside atmosphere near the lower part of said body'structure, said ducts being inclos'ed one wit in the other, whereby heat radiating from the walls of said ducts is adapted to promote circulation of air through said ducts and throughout said 3. A body structure forming a provision chamber, a duct forming a communication between the outside atmosphere near the upper portion of said body structure and the lower portion of said chamber, a second duct surrounding said first duct and forming a communication between the upper portion of said chamber and the outside atmosphere near the lower portion of said body, and a third duct adjacent to said first and second ducts forming a direct com- 10.

municationbetween'the upper and lower portions of said chamber; said first and second ducts being adapted to circulate air from the outside atmosphere between the upper and lower portions of said chamber and expel vitiated air from said chamber 15 and said third duct being adapted to complete a circuit for the local circulation of part of the air in said chamber.

In testimony whereof'I have signe'd'my name to this specification in the presence of 20.

two subscribing witnesses.

CHARLES A. MOORE.

Witnesses:

STELLA L. WAsoHENBnRGER, F. G. BRADBURY. 

